Variable-diameter annular elevator

Abstract

The invention provides a variable-diameter annular elevator, and belongs to the technical field of annular elevators. Comprising a center stand column, a variable-diameter platform structure, a winch system and a safety protection device. The variable-diameter platform structure comprises an annular fixed platform arranged outside the center stand column, a guide rail is arranged outside the annular fixed platform, a fan-shaped telescopic platform is slidably installed outside the guide rail, a fan-shaped vacancy filling platform is arranged outside the fan-shaped telescopic platform, and a limiting bolt is arranged outside the fan-shaped telescopic platform. The winch system comprises a winch arranged outside the center stand column, a pulley block is arranged outside the center stand column, and a steel strand is arranged outside the pulley block. The safety protection device comprises a lug plate welded to the variable-diameter platform structure and close to the inner side of the center stand column, a hook is welded to the outer portion of the center stand column, and a steel wire rope is arranged between the lug plate and the hook. The variable-diameter annular elevator has the beneficial effects that the construction operation requirements of workers with workpieces of different diameters and heights are met, and therefore the use range of the variable-diameter annular elevator is widened.

Description

Technical Field

[0001] The invention belongs to the technical field of ring elevators, and particularly relates to a variable-diameter ring elevator. Background Art

[0002] As a vertical transportation device, the ring elevator is widely used in construction sites, stage machinery, industrial production lines and other scenarios. At the same time, the ring elevator is a vertical transportation device with a special structure, and its running track is circular or elliptical. It can carry people or goods and lift along the circular path. With a closed ring guide rail, it can achieve continuous cyclic operation.

[0003] However, in the process of using the existing ring elevator, the area of the carrying platform for the staff is fixed and cannot be adjusted according to the body shape of the staff, which reduces the application range of the ring elevator. At the same time, the traditional ring elevator occupies a large area and is inconvenient to use during the use process, reducing the practicability and convenience of the ring elevator. Therefore, a variable-diameter ring elevator is proposed to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a variable-diameter ring elevator that can realize variable-diameter adjustment through a sector telescopic platform, supplement the cavity after variable diameter through a sector filling platform to form a complete ring, and meet the internal load of operators during the manufacturing process of hollow cylinder parts within a certain size range, aiming at the deficiencies of the prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a variable-diameter ring elevator, including a central column, a variable-diameter platform structure, a winch system and a safety protection device; The variable-diameter platform structure includes an annular fixed platform arranged outside the central column. A guide rail is arranged outside the annular fixed platform. A sector telescopic platform is slidably installed outside the guide rail. A sector filling platform is arranged outside the sector telescopic platform. A limit bolt is arranged outside the sector telescopic platform; The winch system includes a hoist arranged outside the central column. A pulley block is arranged outside the central column. A steel wire rope is arranged outside the pulley block; The safety protection device includes an ear plate welded to the variable-diameter platform structure and close to the inner side of the central column. A hook is welded outside the central column. A steel wire rope is arranged between the ear plate and the hook.

[0006] Furthermore, a slideway is arranged outside the central column. A slide rail is fixedly installed outside the annular fixed platform. The sizes of the slideway and the slide rail are adapted to each other.

[0007] Further, the size of the sector-shaped filling platform is adapted to the size of the sector-shaped telescopic platform.

[0008] Further, a base is fixedly installed at the bottom of the central column, and the bottom surface of the base is larger than the bottom surface of the central column.

[0009] Further, the winch is a double-brake double-drum winch, and the double-brake double-drum winch is fixedly installed outside the central column and below the annular fixed platform.

[0010] Further, the pulley block includes a fixed pulley and a movable pulley. The fixed pulley is fixedly installed outside the central column, the movable pulley is fixedly installed outside the annular fixed platform, and the steel wire rope is fixed to the outer surface of the central column through the fixed pulley and the movable pulley.

[0011] Further, the inner diameter of the annular fixed platform is fixed, and the outer diameter of the annular fixed platform is adjusted by the sector-shaped telescopic platform.

[0012] Further, an operating handle is provided outside the central column, and the operating handle is electrically connected to the winch.

[0013] Further, the annular fixed platform is fixedly connected to the steel wire rope, a plurality of hooks are provided on the central column, and the size of the steel wire rope is adapted to the size of the hooks.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By installing a guide rail on the annular fixed platform, the present invention can manually push the sector-shaped telescopic platform on the guide rail according to the maximum diameter of the workpiece. After the sector-shaped telescopic platform is adjusted, the sector-shaped filling platform is used to fill the gap on the platform, and then the relative position relationship between the platforms is fixed by using the limit bolts, so as to meet the personnel construction operation requirements of workpieces with different diameters, thereby expanding the use range of the variable-diameter annular elevator.

[0015] 2. By installing a double-brake double-drum winch on the base of the central column and a pulley block on the top, the present invention makes the annular fixed platform move up and down through the pulling force generated by the steel strand driven by the drum, and the double-brake double-drum winch brakes, so that the annular fixed platform can remain stationary at any height, thereby meeting the operation requirements of construction personnel in different height environments. At the same time, when in a stationary state, the connection between the hook and the steel wire rope can effectively improve the safety of the platform.

[0016] 3. The present invention has a compact structure, convenient diameter-changing operation, and small space occupation. It solves the problem of personnel performing construction work at different heights inside hollow cylinders of different diameters through a single-specification elevator, effectively reducing the cost of equipment, reducing floor space, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 : Schematic diagram of the overall structure of the present invention; Figure 2 : A top view of the variable diameter platform of the present invention; Figure 3 : A schematic diagram of the winch system and its arrangement of the present invention; Figure 4 : A top view of the safety protection device of the present invention.

[0019] Among them, 1. center column; 2. slideway; 3. variable diameter platform structure; 4. winch system; 5. safety protection device; 6. annular fixed platform; 7. guide rail; 8. fan-shaped telescopic platform; 9. fan-shaped gap-filling platform; 10. limit bolt; 11. winch; 12. pulley block; 13. steel strand; 14. ear plate; 15. wire rope; 16. hook. DETAILED DESCRIPTION

[0020] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and the accompanying drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0021] In this embodiment, see Figures 1-4 , a variable diameter ring lift, comprising a central column 1, a variable diameter platform structure 3, a winch system 4 and a safety protection device 5; The variable diameter platform structure 3 includes an annular fixed platform 6 arranged on the outside of the central column 1. The annular fixed platform 6 and the central column 1 are movably installed through a pulley group 12, which is convenient for adjusting the position of the annular fixed platform 6. A guide rail 7 is provided on the outside of the annular fixed platform 6. The annular fixed platform 6 and the guide rail 7 are fixedly installed. A fan-shaped telescopic platform 8 is slidably installed on the outside of the guide rail 7. A fan-shaped gap-filling platform 9 is provided on the outside of the fan-shaped telescopic platform 8. A limit bolt 10 is provided on the outside of the fan-shaped telescopic platform 8.

[0022] The winch system 4 includes a winch 11 disposed outside the central column 1. The winch 11 is fixedly mounted on the base of the central column 1. A pulley block 12 is disposed outside the central column 1. A steel strand 13 is disposed outside the pulley block 12. The safety protection device 5 includes an ear plate 14 welded to the variable diameter platform structure 3 and close to the inner side of the central column 1. A hook 16 is welded to the outside of the central column 1. A wire rope 15 is provided between the ear plate 14 and the hook 16. The wire rope 15 connects the ear plate 14 and the hook 16.

[0023] It should be noted that when adjusting the fan-shaped telescopic platform 8, the operator needs to manually push the fan-shaped telescopic platform 8 to move on the guide rail 7, thereby preventing the fan-shaped telescopic platform 8 from detaching from the guide rail 7, thereby improving the safety of adjusting the fan-shaped telescopic platform 8.

[0024] First, the variable diameter platform structure 3 is pushed by the operator to slide the fan-shaped telescopic platform 8 on the guide rail 7, and the outer diameter of the annular fixed platform 6 is changed and adjusted according to the maximum diameter of the workpiece to meet the operating needs of personnel with different diameters of workpieces. When the fan-shaped telescopic platform 8 reaches the specified diameter, the fan-shaped gap-filling platform 9 is installed to fill the gap caused by the sliding of the fan-shaped telescopic platform 8 to form a complete platform, and the telescopic mechanism is locked by the limit bolt 10, and personnel can operate on the platform; at the same time, the annular fixed platform 6 is lifted and lowered by the winch 11 and the pulley block 12, so that the annular fixed platform 6 moves up and down along the central column 1, so that personnel can work at different heights; by adopting the ear plate 14, the wire rope 15 passing through the ear plate 14 is wound on the hook 16, and the hook 16 is welded to the corresponding position of the central column 1, thereby improving the safety of the annular fixed platform 6.

[0025] Technical effect: The variable diameter annular elevator in the present invention can be used to carry workers during the production process of large hollow cylindrical parts with different outer diameters. The variable diameter adjustment is achieved through the fan-shaped telescopic platform 8, and the cavity after the diameter change is supplemented by the fan-shaped gap-filling platform 9 to form a complete ring, which can meet the internal load of workers in the production process of hollow cylindrical parts within a certain size range; the annular fixed platform 6 is raised and lowered by the winch system 4, and the platform is prevented from falling by the wire rope 15 to ensure the safety of the workers; the variable diameter operation can reduce the current status of the original one-size-fits-all elevator, reduce the cost of equipment, and also reduce the floor space and improve work efficiency.

[0026] In this embodiment, see Figure 1 A slideway 2 is provided on the outside of the central column 1, and a slide rail is fixedly installed on the outside of the annular fixed platform 6, and the size of the slideway 2 is adapted to that of the slide rail.

[0027] It should be added that there are four slideways 2 and four slide rails, which are respectively arranged on the front and rear sides of the central column 1. The four slideways 2 correspond to the four slide rails one by one, which is convenient for limiting the annular fixed platform 6.

[0028] Technical effect: By setting up the cooperation between the slide 2 and the slide rail, the annular fixed platform 6 can be made more stable during the up and down adjustment process, and the annular fixed platform 6 is made concentric with the central column 1 during the adjustment process, thereby improving the safety of the height adjustment of the annular fixed platform 6.

[0029] Optionally, the size of the fan-shaped gap-filling platform 9 is adapted to the size of the fan-shaped telescopic platform 8, so that the fan-shaped gap-filling platform 9 can fill the gap caused by the adjustment of the fan-shaped telescopic platform 8, thereby allowing the platform to remain intact.

[0030] Optionally, a base is fixedly installed at the bottom of the central column 1, and the bottom surface of the base is larger than the bottom surface of the central column 1, so that the central column 1 can be supported, so that the central column 1 remains stable during use.

[0031] Optionally, the winch 11 is a double-brake double-drum winch, which is fixedly installed on the outside of the central column 1 and located below the annular fixed platform 6, thereby achieving the purpose of adjusting the height of the annular fixed platform 6, thereby ensuring the safety of the annular fixed platform 6 after adjustment.

[0032] In addition, in the present invention, the dual brake and dual drum have double insurance, wherein the dual brake air system ensures that the machine can still be shut down reliably when a single brake fails, and it also complies with the safety specifications for special equipment. The dual drums work together to balance the tension of the wire ropes 15 on both sides, avoiding unbalanced loading or structural deformation caused by one-sided hand. If a single drum or drive component fails, the other system can temporarily maintain basic functions to buy time for maintenance. The dual system design allows online maintenance of single-side equipment and reduces downtime. The dual brake and dual drum can respond dynamically, the main brake is used for conventional deceleration, and the emergency brake can respond quickly when power is off or a fault occurs, preventing the elevator from being stuck, thereby improving the safety and reliability of the elevator.

[0033] Optionally, the pulley block 12 includes a fixed pulley and a movable pulley, the fixed pulley is fixedly installed on the outside of the central column 1, and the movable pulley is fixedly installed on the outside of the annular fixed platform 6. The wire rope 15 is fixed to the outer surface of the central column 1 through the fixed pulley and the movable pulley. The purpose is to enable the winch 11 to drive the wire rope 15 to move through the pulley block 12, so that when the annular fixed platform 6 is moved to the specified position, it is convenient to fix it, thereby improving the safety of the use of the annular fixed platform 6.

[0034] Optionally, the inner diameter of the annular fixed platform 6 is fixed, and the outer diameter of the annular fixed platform 6 is adjusted by the fan-shaped telescopic platform 8, so that the size of the annular fixed platform 6 can be adjusted, so that the annular fixed platform 6 can meet the internal load-bearing capacity of operators in the manufacturing process of hollow cylindrical parts within a certain size range, making the elevator more widely used.

[0035] Optionally, an operating handle is provided on the outside of the central column 1, and the operating handle is electrically connected to the winch 11, so that the winch 11 can be controlled by the handle, thereby improving the convenience of operating the winch 11.

[0036] Optionally, the annular fixed platform 6 is fixedly connected to the steel wire rope 15, and a plurality of hooks 16 are provided on the central column 1. The sizes of the steel wire rope 15 and the hooks 16 are matched, thereby achieving the purpose of protecting the annular fixed platform 6, so that the annular fixed platform 6 can be fixed after the height is adjusted, further improving the safety of the annular fixed platform 6, and thus also improving the safety of the operator's operation.

[0037] Among them, the present invention can realize the up and down movement of the elevator through the slide 2, and the footprint is relatively small. The annular elevator can be adjusted through the guide rail 7 in the hollow cylinder-like parts within a certain size range. The platform has a variable diameter operation time period, and is easy to disassemble and assemble. It can be quickly assembled to solve the problem of personnel performing construction operations at different heights inside hollow cylinders of various diameters.

[0038] It should be added that the parts not described in detail in the present invention are prior art.

[0039] Working principle: When the variable diameter annular elevator is working, the winch system 4 drives the variable diameter platform structure 3 to do lifting movement. When the variable diameter platform structure 3 is lifted to the specified position, the movement of the winch system 4 is stopped and locked; at the same time, according to the platform diameter required by the hollow cylinder, the fan-shaped telescopic platform 8 is pushed. After the outer diameter of the annular fixed platform 6 is stretched to the specified diameter, the annular fixed platform 6 and the fan-shaped telescopic platform 8 are fixed by the limit bolts 10, and the fan-shaped filling platform 9 is laid on the fan-shaped telescopic platform 8 to form a complete platform to realize the platform assumption. After the platform is completed at the specified height and specified diameter, the wire rope 15 tied to the ear plate 14 is connected to the nearest hook 16 of the central column 1, thereby playing a protective role.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A variable diameter annular elevator, characterized in that: It comprises a central column (1), a variable diameter platform structure (3), a winch system (4) and a safety protection device (5); The variable diameter platform structure (3) comprises an annular fixed platform (6) arranged outside the central column (1), a guide rail (7) is arranged outside the annular fixed platform (6), a fan-shaped telescopic platform (8) is slidably mounted outside the guide rail (7), a fan-shaped gap-filling platform (9) is arranged outside the fan-shaped telescopic platform (8), and a limiting bolt (10) is arranged outside the fan-shaped telescopic platform (8); The winch system (4) comprises a winch (11) arranged outside the central column (1), a pulley block (12) is arranged outside the central column (1), and a steel strand (13) is arranged outside the pulley block (12); The safety protection device (5) comprises an ear plate (14) welded to the variable diameter platform structure (3) and close to the inner side of the central column (1); a hook (16) is welded to the outside of the central column (1); and a steel wire rope (15) is provided between the ear plate (14) and the hook (16).

2. The variable diameter circular elevator according to claim 1, characterized in that: A slideway (2) is provided on the outside of the central column (1), and a slide rail is fixedly installed on the outside of the annular fixed platform (6), and the slideway (2) is adapted to the size of the slide rail.

3. The variable diameter circular elevator according to claim 1, characterized in that: The size of the fan-shaped gap-filling platform (9) is compatible with the size of the fan-shaped telescopic platform (8).

4. The variable diameter circular elevator according to claim 1, characterized in that: A base is fixedly mounted on the bottom of the central column (1), and the bottom surface of the base is larger than the bottom surface of the central column (1).

5. The variable diameter circular elevator according to claim 1, characterized in that: The hoist (11) is a double-brake double-drum winch, which is fixedly installed on the outside of the central column (1) and located below the annular fixed platform (6).

6. The variable diameter circular elevator according to claim 1, characterized in that: The pulley block (12) comprises a fixed pulley and a movable pulley, the fixed pulley is fixedly mounted on the outside of the central column (1), the movable pulley is fixedly mounted on the outside of the annular fixed platform (6), and the steel wire rope (15) is fixed to the outer surface of the central column (1) via the fixed pulley and the movable pulley.

7. The variable diameter circular elevator according to claim 1, characterized in that: The inner diameter of the annular fixed platform (6) is fixed, and the outer diameter of the annular fixed platform (6) is adjusted by the fan-shaped telescopic platform (8).

8. The variable diameter circular elevator according to claim 1, characterized in that: An operating handle is provided on the outside of the central column (1), and the operating handle is electrically connected to the winch (11).

9. The variable diameter circular elevator according to claim 1, characterized in that: The annular fixed platform (6) is fixedly connected to the steel wire rope (15), and a plurality of hooks (16) are provided on the central column (1), and the sizes of the steel wire rope (15) and the hooks (16) are adapted to each other.

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